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Vol. 26 No. 4 (2014): Vol 26 Issue 4

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Thermal Analysis of Long-Term Storage Lignite in Oxygen-Enriched Air

https://doi.org/10.14233/ajchem.2014.15816
Xiangyun Chen
Inner Mongolia University of Technology, Hohhot 010051, P.R. China
Yongfeng Zhang
Inner Mongolia University of Technology, Hohhot 010051, P.R. China
Qiancheng Zhang
Inner Mongolia University of Technology, Hohhot 010051, P.R. China
Quan Zhou
Inner Mongolia University of Technology, Hohhot 010051, P.R. China

Corresponding Author(s) : Yongfeng Zhang

environzyf@sina.com; lzg05006@163.com

Asian Journal of Chemistry, Vol. 26 No. 4 (2014): Vol 26 Issue 4

Abstract

The combustion behavior of fresh lignite and long-term storage lignite from the same region were assessed in O2/N2 background gases by using thermogravimetric analyzer. The oxygen mole fraction is in the range of 21-80 %. The results show that the combustion ability of long-term storage lignite is weaker than the fresh one. The storage lignite almost unable to ignite when the oxygen content per cent is 21 % and can't burn out before 30 % O2 atmosphere. While the fresh sample can burn out completely in each atmosphere. Oxygen-enriched atmosphere improve the combustion and ignition capacity of the long-term storage lignite, especially the partial pressure of O2 above 40 %.

Keywords

Oxygen-enriched combustion Long-term storage lignite Fresh lignite Thermal analysis
Chen, X., Zhang, Y., Zhang, Q., & Zhou, Q. (2014). Thermal Analysis of Long-Term Storage Lignite in Oxygen-Enriched Air. Asian Journal of Chemistry, 26(4), 1027–1032. https://doi.org/10.14233/ajchem.2014.15816
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